Experimental and theoretical study of the Auger cascade following 2p → 4s photoexcitation in Ar

K. Ueda, Y. Shimizu, H. Chiba, M. Kitajima, H. Tanaka, S. Fritzsche, N. M. Kabachnik

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41 Citations (Scopus)


Resonant Auger transitions from the 2p-14s photo-excited states in Ar to the 3p-13s-14s levels and the subsequent Auger decay to the 3p4 states of Ar2+ are studied by means of angle-resolved electron spectroscopy. The branching ratios and the values of the angular anisotropy parameter β are determined for the emitted electrons. The angular correlation between the two electrons emitted in the sequential transitions in the cascade are also measured in the coincidence experiment. All the experimental data are compared with MCDF calculations which include electron correlations in the initial, intermediate and final states of the cascade. It is found that although the electron energies are very well reproduced by the calculations, the calculated anisotropy parameters and angular correlation parameters for some of the transitions disagree with the experiment.

Original languageEnglish
Pages (from-to)107-119
Number of pages13
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Issue number1
Publication statusPublished - 2001 Jan 14

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics


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